<script setup lang="ts">
import { useGuessLike, useSkeleton } from '@/composables'
import {
  deleteMemberCartAPI,
  getMemberCartAPI,
  putMemberCartBySkuIdAPI,
  putMemberCartSelectedAPI,
} from '@/services/cart'
import { useMemberStore } from '@/stores'
import type { CartItem } from '@/types/cart'
import type { InputNumberBoxEvent } from '@/types/vk-data-input-number-box'
import { computed, onMounted } from 'vue'
import { ref } from 'vue'
import CartSkeleton from './CartSkeleton.vue'

// 获取会员store
const memberStore = useMemberStore()

// 购物车列表
const cartList = ref<CartItem[]>([])

// 获取购物车数据
const getCartList = async () => {
  const res = await getMemberCartAPI()
  cartList.value = res.result
}

// 骨架屏显示和隐藏
const { isShowSkeleton, skeletonController } = useSkeleton()

onMounted(() => {
  // 如果用户已经登录，获取购物车数据
  if (memberStore.profile) {
    skeletonController(async () => {
      await getCartList()
    })
  }
})
// 触底刷新猜你喜欢列表
const { guessLikeRef, onScrolltolower } = useGuessLike()

// 点击删除按钮
const onDeleteCart = (skuId: string) => {
  // 确认删除按钮弹窗
  uni.showModal({
    title: '温馨提示',
    content: '您确定要删除吗？',
    success: async (res) => {
      if (res.confirm) {
        // 删除
        await deleteMemberCartAPI({ ids: [skuId] })
        // 刷新列表
        getCartList()
      }
    },
  })
}

// 修改商品数量
const onChangeCount = async (e: InputNumberBoxEvent) => {
  await putMemberCartBySkuIdAPI(e.index, { count: e.value })
}

// 修改选中状态 - 单品修改
const onChangeSelected = async (item: CartItem) => {
  // 点击切换选中状态
  item.selected = !item.selected
  // 后端更新数据
  await putMemberCartBySkuIdAPI(item.skuId, { selected: item.selected })
}

// 计算全选状态
const isSelectedAll = computed(() => {
  return cartList.value.every((item) => item.selected)
})

// 修改全选状态
const onChangeSelectedAll = async () => {
  const currentSelected = isSelectedAll.value
  // 点击切换全选状态
  cartList.value.forEach((item) => {
    item.selected = !currentSelected
  })
  // 后端更新数据
  await putMemberCartSelectedAPI({ selected: !currentSelected })
}

// 被选择的商品列表
const selectedCartList = computed(() => {
  return cartList.value.filter((item) => item.selected)
})

// 被选中的商品总件数
const selectedCartCount = computed(() => {
  return selectedCartList.value.reduce((total, item) => {
    return total + item.count
  }, 0)
})

// 被选中的商品总金额
const selectedCartPrice = computed(() => {
  return selectedCartList.value
    .reduce((total, item) => {
      return total + item.price * item.count
    }, 0)
    .toFixed(2)
})

// 结算商品
const onToPay = async () => {
  if (selectedCartList.value.length <= 0) {
    return uni.showToast({
      title: '请选择商品',
      icon: 'none',
    })
  }
  // 跳转到结算页
  uni.navigateTo({
    url: '/pages-order/create/create',
  })
}
</script>

<template>
  <CartSkeleton v-if="isShowSkeleton" />
  <view class="cart-main" v-else>
    <scroll-view scroll-y class="scroll-view" @scrolltolower="onScrolltolower">
      <!-- 已登录: 显示购物车 -->
      <template v-if="memberStore.profile">
        <!-- 购物车列表 -->
        <view class="cart-list" v-if="cartList.length > 0">
          <!-- 优惠提示 -->
          <view class="tips">
            <text class="label">满减</text>
            <text class="desc">满1件, 即可享受9折优惠</text>
          </view>
          <!-- 滑动操作分区 -->
          <uni-swipe-action>
            <!-- 滑动操作项 -->
            <uni-swipe-action-item v-for="item in cartList" :key="item.skuId" class="cart-swipe">
              <!-- 商品信息 -->
              <view class="goods">
                <!-- 选中状态 -->
                <text
                  class="checkbox"
                  :class="{ checked: item.selected }"
                  @tap="onChangeSelected(item)"
                ></text>
                <navigator
                  :url="`/pages/goods/goods?id=1435025`"
                  hover-class="none"
                  class="navigator"
                >
                  <image mode="aspectFill" class="picture" :src="item.picture"></image>
                  <view class="meta">
                    <view class="name ellipsis">{{ item.name }}</view>
                    <view class="attrsText ellipsis">{{ item.attrsText }}</view>
                    <view class="price">{{ item.price }}</view>
                  </view>
                </navigator>
                <!-- 商品数量 -->
                <view class="count">
                  <vk-data-input-number-box
                    v-model="item.count"
                    :min="1"
                    :max="item.stock"
                    :index="item.skuId"
                    @change="onChangeCount"
                  />
                </view>
              </view>
              <!-- 右侧删除按钮 -->
              <template #right>
                <view class="cart-swipe-right">
                  <button class="button delete-button" @tap="onDeleteCart(item.skuId)">删除</button>
                </view>
              </template>
            </uni-swipe-action-item>
          </uni-swipe-action>
        </view>
        <!-- 购物车空状态 -->
        <view class="cart-blank" v-else>
          <image src="/static/images/blank_cart.png" class="image" />
          <text class="text">购物车还是空的，快来挑选好货吧</text>
          <navigator open-type="switchTab" url="/pages/index/index" hover-class="none">
            <button class="button">去首页看看</button>
          </navigator>
        </view>
        <!-- 吸底工具栏 -->
        <view class="toolbar">
          <text class="all" :class="{ checked: isSelectedAll }" @tap="onChangeSelectedAll"
            >全选</text
          >
          <text class="text">合计:</text>
          <text class="amount">{{ selectedCartPrice }}</text>
          <view class="button-grounp">
            <view
              class="button payment-button"
              :class="{ disabled: selectedCartList.length <= 0 }"
              @tap="onToPay"
            >
              去结算({{ selectedCartCount }})
            </view>
          </view>
        </view>
      </template>
      <!-- 未登录: 提示登录 -->
      <view class="login-blank" v-else>
        <text class="text">登录后可查看购物车中的商品</text>
        <navigator url="/pages/login/login" hover-class="none">
          <button class="button">去登录</button>
        </navigator>
      </view>
      <!-- 猜你喜欢 -->
      <BaseGuess ref="guessLikeRef"></BaseGuess>
    </scroll-view>
  </view>
</template>

<style lang="scss">
.cart-main {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: #f7f7f8;
}

// 滚动容器
.scroll-view {
  flex: 1;
  padding-bottom: 100rpx;
}

// 购物车列表
.cart-list {
  padding: 0 20rpx;

  // 优惠提示
  .tips {
    display: flex;
    align-items: center;
    line-height: 1;
    margin: 30rpx 10rpx;
    font-size: 26rpx;
    color: #666;

    .label {
      color: #fff;
      padding: 7rpx 15rpx 5rpx;
      border-radius: 4rpx;
      font-size: 24rpx;
      background-color: #27ba9b;
      margin-right: 10rpx;
    }
  }

  // 购物车商品
  .goods {
    display: flex;
    padding: 20rpx 20rpx 20rpx 80rpx;
    border-radius: 10rpx;
    background-color: #fff;
    position: relative;

    .navigator {
      display: flex;
    }

    .checkbox {
      position: absolute;
      top: 0;
      left: 0;

      display: flex;
      align-items: center;
      justify-content: center;
      width: 80rpx;
      height: 100%;

      &::before {
        content: '\e6cd';
        font-family: 'erabbit' !important;
        font-size: 40rpx;
        color: #444;
      }

      &.checked::before {
        content: '\e6cc';
        color: #27ba9b;
      }
    }

    .picture {
      width: 170rpx;
      height: 170rpx;
    }

    .meta {
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 20rpx;
      margin-left: 20rpx;
    }

    .name {
      font-size: 26rpx;
      color: #444;
    }

    .attrsText {
      line-height: 1.8;
      padding: 0 15rpx;
      font-size: 24rpx;
      align-self: flex-start;
      border-radius: 4rpx;
      color: #888;
      background-color: #f7f7f8;
    }

    .price {
      line-height: 1;
      font-size: 26rpx;
      color: #444;
      margin-bottom: 2rpx;
      color: #cf4444;

      &::before {
        content: '￥';
        font-size: 80%;
      }
    }

    // 商品数量
    .count {
      position: absolute;
      bottom: 10rpx;
      right: 5rpx;

      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 220rpx;
      height: 48rpx;

      .text {
        height: 100%;
        padding: 0 20rpx;
        font-size: 32rpx;
        color: #444;
      }

      .input {
        height: 100%;
        text-align: center;
        border-radius: 4rpx;
        font-size: 24rpx;
        color: #444;
        background-color: #f6f6f6;
      }
    }
  }

  .cart-swipe {
    display: block;
    margin: 20rpx 0;
  }

  .cart-swipe-right {
    display: flex;
    height: 100%;

    .button {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 50px;
      padding: 6px;
      line-height: 1.5;
      color: #fff;
      font-size: 26rpx;
      border-radius: 0;
    }

    .delete-button {
      background-color: #cf4444;
    }
  }
}

// 空状态
.cart-blank,
.login-blank {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 60vh;
  .image {
    width: 400rpx;
    height: 281rpx;
  }
  .text {
    color: #444;
    font-size: 26rpx;
    margin: 20rpx 0;
  }
  .button {
    width: 240rpx !important;
    height: 60rpx;
    line-height: 60rpx;
    margin-top: 20rpx;
    font-size: 26rpx;
    border-radius: 60rpx;
    color: #fff;
    background-color: #27ba9b;
  }
}

// 吸底工具栏
.toolbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: var(--window-bottom);
  z-index: 1000;

  height: 100rpx;
  padding: 0 20rpx;
  display: flex;
  align-items: center;
  border-top: 1rpx solid #ededed;
  border-bottom: 1rpx solid #ededed;
  background-color: #fff;
  box-sizing: content-box;

  .all {
    margin-left: 25rpx;
    font-size: 14px;
    color: #444;
    display: flex;
    align-items: center;
  }

  .all::before {
    font-family: 'erabbit' !important;
    content: '\e6cd';
    font-size: 40rpx;
    margin-right: 8rpx;
  }

  .checked::before {
    content: '\e6cc';
    color: #27ba9b;
  }

  .text {
    margin-right: 8rpx;
    margin-left: 32rpx;
    color: #444;
    font-size: 14px;
  }

  .amount {
    font-size: 20px;
    color: #cf4444;

    .decimal {
      font-size: 12px;
    }

    &::before {
      content: '￥';
      font-size: 12px;
    }
  }

  .button-grounp {
    margin-left: auto;
    display: flex;
    justify-content: space-between;
    text-align: center;
    line-height: 72rpx;
    font-size: 13px;
    color: #fff;

    .button {
      width: 240rpx;
      margin: 0 10rpx;
      border-radius: 72rpx;
    }

    .payment-button {
      background-color: #27ba9b;

      &.disabled {
        opacity: 0.6;
      }
    }
  }
}
</style>
